METHOD AND ARRANGEMENT OF INCREASING IMPAIRMENT CO

专利名称：METHOD AND ARRANGEMENT OF

INCREASING IMPAIRMENT CO-VARIANCEMATRIX ESTIMATION ACCURACY

发明人：WANG, Hai申请号：EP10850007.5申请日：20100420公开号：EP2561635A1公开日：20130227

摘要：The present invention relates to a method and an arrangement (20) ofincreasing impairment co-variance matrix R estimation accuracy in downlink in a userequipment (18) in a communication network system. De-spread is performed on HS-DSCHsymbols to form a matrix X of de-spread symbols (100). The matrix X and channelestimates h from CPiCH and modulation scheme information are used to form a matrix Sof recovered symbols in hard value (101 ). The matrix X and the channel estimates h themodulation scheme information and the matrix S output from the previous step are usedto increase the estimation accuracy of the matrix S (102). The previous step (102) isrepeated until the output symbols are the same as the input symbols or the number ofiterations reaches a pre-defined maximum value (103). The matrix X and the matrix S withincreased estimation accuracy are used to form an impairment co-variance matrix Restimate (104). The impairment co-variance matrix R estimate and the channel estimates hfrom CPiCH are used to determine G-RAKE combining weight w and to estimate CPiCHSINR (105).

申请人：Telefonaktiebolaget L M Ericsson (PUBL)

地址：164 83 Stockholm SE

国籍：SE

代理机构：Sjöberg, Mats Hakan

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